Simon ingersoll



(No Model.)

S. INGERSOLL.

ASTEAM ROCK DRILL.

Patented'Dec. 19

rNTTED STATES PATENT FFIC.

SIMON INGERSOLL, OF STAMFOED, CONNECTICUT, ASSIGNOR TO THE INGER- SOLLMANUFACTURING COMPANY, OF 'SAME PLACE.

STEAM ROCK-DRILL.

SPECIFICATION forming part of Letters Patent No. 269,422, dated December19, lese.

Application tiled June 14, 1882. (No model.)

To all whom 'it may concern.:

Be it known that I, SIMON INGERsoLL, ot' Stamford, in the county otFairtleld and State of Connecticut, have invented certain new and usefulImproveinentsin Steam Rock-Drills, ot' which the following is a t'ull,clear, and exact description. j

Reference is to he had to the accompanying drawings, forming part ofthis specification, in 1o which similar letters of reference indicatecorresponding parts in all the figures.4

Figure l is a'side elevation of my improvement, shown partly in sectionand with part of the casing removed. Fig. 2 is a rear ele- '15 vationot' the'same, partly in section. Fig. 3 is a sectional end elevation ofthe same, taken through the line 0c x, Fig. l. Fig.` 4 is a plan viewot' theeylinder and steam-chest, the cover ofthe steam-chest beingremoved and pagts of 2o theatalves being broken away. Fig. 5 is asectional plan View of a part ot' the cylinder, taken through the line3/ y, Fig. l. Fig. 6 is a crosssection of the drill-bit clutch, takenthrough the line z e, Fig. l. Fig. 7 is a sectional plan view of theswiveled tripod clamp, taken through the line fw w, Fig. l. Figs. 8, 9,10, and ll are detail sectional elevations of the parts of a universaljoint for one ot' the tripod legs.

The object of this invention is to promote convenience and security in'adjusting steainrock-drills.

The invention consists in a steam rock-drill constructed with theway-plate that carries the steam-cylinder, connected by bolts havingLheads, and bearing-blocks, with a sleeve, to the ends ot' which theside legs are connected byV universal joints, and which is provided withrigid arms, to which is hinged a slotted 4o frame, having the rear leg'secured toit, so that'the steam-cylinder and the legs can be readilyadjustedin any desired position. VVit-hin the steamchest two valves areattached to the outer ends of two levers, the inner ends of which areconnected by an equal-armed lever. The valve-carrying levers areattached to pivots, which are provided with rigid arms projecting intothe interior ot' the cylinder, so

that the valves will be operated at the proper 5o times by the movementsof the piston.

A represents a steaincylinder, the T-shaped base of which slides in agroove in a wayplate, B, in the lordinary manner. The cylinder A ismoved up and down by operating the feed-screw C, which is swiveled to auarm, D, attached to the wayplate B and passing through the nut E,attached to the cylinder A. The outer end of the feed-screw C is squaredto receive a crank, hand-wheel, or other suitable means for operatingit.

In the center' ot' the lower side ot' the wayplate B is formed acircular recess, F, around the inner end ot' which is formedv an annulargroove, G, to receive the L-heads ot the bolts H. The bolts H are keptin place in the groovcd recess F by the upper part or saddle I of thecoupling, which has grooves in its sides to receive the said bolts. Thebolts H pass through holes in the ends of' the lower part, J, ot' thecouplings, and vhave nuts 7o screwed upon their lower ends. The adjacentfaces ot' the parts I J ofthe coupling are concaved to receive thesleeve K, through the center of which passes longitudinally the rod L.The ends ofthe sleeve K are concaved to receive the rounded or conicalends of the inner parts, M, of the couplings for the side legs of thetripod. The rod L also passes through the outer parts, N, of thecouplings, and has nuts ,screwed upon its ends. rPhe adjacent 8o facesof the parts M N are concaved to t upon the edges of the disks O,i'ormed upon the ends of the prongs ot' the forked ends of the sidelegs, P, which disks() are placed upon the opposite sides of and arekeptin place by the end parts ot the screw-rod L. This constructionforms a universal joint, and allows theside legs, P, to be adjusted inany required position. The central coupling allows the cylinderA to beadjusted laterallyr into any desired 9o position, while the sleeve K androd L allow it to have a free vertical adjustment.

Upon the end parts of the sleeve K are formed short rigid parallel armsQ, to and between the ends of which are pivoted, by other suitablemeans, the ends of a lar plate or frame, R.

To the center of thestraight bar ot' the frame R is hinged, by a screwor bolt, S, the end of the third or rear leg, T, which is connected rooscrews or seinicircuwith the curved bar ot' the frame R by a bolt orscrew, U, the said bolt or screw passing through a hole in the said legT and a curved slot, R', in the fratne R, so that by loosening the boltor screw U the leg T can be adjusted vlaterally into any desiredposition,while the hinged framed R allows it to have a free verticaladjustment.

f In the lowerends of the legs P T P are formed sockets. in which aresecured, by set-screws V, steel points WV, so that the said points canbe readily removed and sharpened. The points W and set-screwsVare alsouseful in leveling the machine.

To the upper side ot' the cylinder A is attached, or upon it is formed,a steam-chest, X, in the middle part of the outer side of which isformed an opening, Y, provided with a col. lar, Z, for the attachment ofthe inlet steampipe.

In the end parts of the bottom of the steamchest X are formed ports a.,to admit steam into the end parts of the interior of the cylinder A, andat the outer sides ot the said inlet-ports a are formed ports b, throughwhich the exhauststeam escapes from the said cylinder A and passes intothe outlets c through recesses in the lower sides of the valves d. Thevalves d rest and slide upon the bottom of the steamchest X, and areformed upon or attached to the outer ends of the short levers c, whichare rigidly attached to pivots f, working in bearings in the 'side partof the cylinder A. The inner ends ot' the levers e are rounded and restin semicircular recesses in the ends of the equalarmed lever g, which isattached to the upper end of a pivot, h, working in bearings in the sideof the cylinder A, so that the levers e will always move at the sametime and in opposite directions.

To thelower parts ofthe pivotf are attached arms or levcrs i, which restin recesses opening into the interior ot' thecylinder A, and whichincline inward and toward the ends ot' tbe said cylinder. The ends ofthearms 'L project into the interior of the cylinder A, so that they willbe struck by the pistonj as it approaches the end ot' its stroke, andwill be pushed outward. As each armi moves outward it moves its valve do the inlet-port a, and allows steam to enter the cylinder A in front ofthe piston j, so as to cushion the said piston. The movement ot' eitherValve d to uncover an inlet-port moves the other valve d over bothports, so that steam can exhaust in front of the pistonj as the saidpiston begins its return movement, the exhaust at each end of thecylinder being thus opened at the same time as the inlet-port at theother end of the said cylinder.

A The piston-rod la ismade large, so that only a comparatively smallamount of steam can enter the forward end of the cylinder A, and passesout through a stuffing-box, l, secured to the said end. Theforward endot' the piston-rod 7c is perforated longitudinally to receive the shankot' the drill-bit m, which is secured in place by the clutch n. Theforward ends of the twoparts ot' the clutch a have halt'- round groovesformed in their sides to receive and tit upon the drill-bit m. The innersides of the rear middle parts ot' the parts ot' the clutch n arerecessed to receive the end of the piston-rod k, leaving` iianges upontheir rear ends to tit into an annular groove, o, in the said piston-rodata little distance frotn its forward end, as shown in Fig. l. The partsof the clutch n are drawn together, clamping the drill-bit m andsecurely connecting it with the end of the piston-rod k by two screws,p, passing through the forward end of one part and screwing into theforward end of the other part, as shown in dotted lines in Figs. 1 and6.

Having thus fully described myinvention, I claim as new and desire tosecure by Letters Patentl. In a steam rock-drill, the combination, withway-plate B, that carries the steam-cylinder A and is provided with agrooved circular recess, F Gr, of the L-headed bolts G, the bearing I J,and the sleeve K, substantially as herein shown and described, wherebythe said way-plate andcylinder are swiveled and hinged to the saidsleeve, as set forth.

2. In a steam rock-drill, the combination, with,the recessed ends ot'the slr-eve K, with which the way-plate and steam-cylinder areconnected, and the side legs, l?, provided with forked upper ends,having disks O upon the ends ot' their prongs,otl the bearings M N andthe screw-rod L, substantially as herein shown and described, wherebythe said legs can be adjusted in any desired position, as set forth.

3. ln a steam rock-drill, the combination, with the sleeve K and therear leg, T, ot 'the hinged frame R, having curved slot R, and the boltsor screws S U, substantially as herein shown and described, whereby thesaid rear leg will have a free vertical and lateral adjustment, as setforth.

4. ln a steam rock-drill, the combination, with the steam-cylinder A andthe steam-chest X, of the valves d, levers e, pivotsf, and arms t', andthe connecting-lever g, substantially as herein shown and described,`whereby the valves will be operated at the same time by the movements ofthe piston, as set forth.

SIMGN IINGERSOLL.

Witnesses SAMUEL ADAMS, H. STANLEY FiNoH.

IIO

